Apple Volcano

This was our first full week of fall and it’s been HOT and sweltering over here.  Finally today, it feels like Fall and it’s a perfect day to celebrate apple season.  Aside from eating and baking apples, why not use some over-ripe apples to play with? Here’s an easy twist on the classic “volcano” experiment, just in time for Apple season.  So, while you are picking out your apples, get a few extra and let your little ones have some explosive fun!

Here’s what you need to get started:

  • Apples (any variety will do)
  • Baking soda
  • Vinegar
  • Food coloring/liquid water colors (optional – but everything is so much more fun with colors!)
  • Knife and metal spoon to hollow it out (Adult use only)
  • droppers and spoons
  • cups
  • Tray to contain the mess


First cut the top off the apple and scoop out the insides and the seeds to form a “bowl”.  I found it easiest to cut a circle off the top and then use a metal tablespoon to scoop it out.


This kept the top of the apple intact to use as a lid.  We saved the seeds and stem for our Exploring the Five Senses with Apples activity.


I set up a tray with the hollowed apple, dropper, cup of baking soda, spoon and cup of vinegar (I colored ours red for fun)


Then I invited the superheroes to play.  These little ones KNOW exactly what to do with baking soda and vinegar!


Repeat as many times as your superheroes want to do it.  We went through a box of baking soda between the two older ones!


The Science behind the activity:

This is a classic acid-base reaction.  Baking soda is a base and vinegar is an acid.  When they combine, they create a chemical reaction where the baking soda neutralizes the vinegar.  A by-product of the reaction is carbon dioxide.  That is what the bubbles are.  As the carbon dioxide is formed and bubbles out, it carries some liquid up with it, hence the “eruption”.


There are a million ways to do this experiment.  I can pretty much adapt this to any theme.  Another great Halloween theme application of this is the Pumpkin Volcano, which we also did.

For my Tiny Tot class, I ended the class by reading “Ten Apples On Top” by Dr. Seuss.

For more Apple Science Activities, try the following:



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